Xperia Neo Light Sensor

Hello guys.This sensor is vey annoying to me.I really want an option to stop it.I fould an app in the market but it requires to root my phone and I don't want to.Do you have any other kind of solutions to disable the Light Sensor ? If not,but you want,let's make few more discussions about it and hope an option for disabling or enabling the sensor in the incoming ICS update